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Revision 1.39.2.8 - (view) (download)

1 : edgomez 1.38 /******************************************************************************
2 :     * *
3 :     * This file is part of XviD, a free MPEG-4 video encoder/decoder *
4 :     * *
5 :     * XviD is an implementation of a part of one or more MPEG-4 Video tools *
6 :     * as specified in ISO/IEC 14496-2 standard. Those intending to use this *
7 :     * software module in hardware or software products are advised that its *
8 :     * use may infringe existing patents or copyrights, and any such use *
9 :     * would be at such party's own risk. The original developer of this *
10 :     * software module and his/her company, and subsequent editors and their *
11 :     * companies, will have no liability for use of this software or *
12 :     * modifications or derivatives thereof. *
13 :     * *
14 :     * XviD is free software; you can redistribute it and/or modify it *
15 :     * under the terms of the GNU General Public License as published by *
16 :     * the Free Software Foundation; either version 2 of the License, or *
17 :     * (at your option) any later version. *
18 :     * *
19 :     * XviD is distributed in the hope that it will be useful, but *
20 :     * WITHOUT ANY WARRANTY; without even the implied warranty of *
21 :     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
22 :     * GNU General Public License for more details. *
23 :     * *
24 :     * You should have received a copy of the GNU General Public License *
25 :     * along with this program; if not, write to the Free Software *
26 :     * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA *
27 :     * *
28 :     ******************************************************************************/
29 :    
30 :     /******************************************************************************
31 :     * *
32 :     * bitstream.c *
33 :     * *
34 :     * Copyright (C) 2001 - Peter Ross <pross@cs.rmit.edu.au> *
35 :     * *
36 :     * For more information visit the XviD homepage: http://www.xvid.org *
37 :     * *
38 :     ******************************************************************************/
39 :    
40 :     /******************************************************************************
41 :     * *
42 :     * Revision history: *
43 :     * *
44 :     * 05.01.2003 GMC support - gruel *
45 :     * 04.10.2002 qpel support - Isibaar *
46 :     * 11.07.2002 add VOP width & height return to dec when dec->width *
47 :     * or dec->height is 0 (for use in examples/ex1.c) *
48 :     * MinChen <chenm001@163.com> *
49 :     * 22.05.2002 bs_put_matrix fix *
50 :     * 20.05.2002 added BitstreamWriteUserData *
51 :     * 19.06.2002 Fix a little bug in use custom quant matrix *
52 :     * MinChen <chenm001@163.com> *
53 :     * 08.05.2002 add low_delay support for B_VOP decode *
54 :     * MinChen <chenm001@163.com> *
55 :     * 06.05.2002 low_delay *
56 :     * 06.05.2002 fixed fincr/fbase error *
57 :     * 01.05.2002 added BVOP support to BitstreamWriteVopHeader *
58 :     * 15.04.2002 rewrite log2bin use asm386 By MinChen <chenm001@163.com> *
59 :     * 26.03.2002 interlacing support *
60 :     * 03.03.2002 qmatrix writing *
61 :     * 03.03.2002 merged BITREADER and BITWRITER *
62 :     * 30.02.2002 intra_dc_threshold support *
63 :     * 04.12.2001 support for additional headers *
64 :     * 16.12.2001 inital version *
65 :     * *
66 :     ******************************************************************************/
67 :    
68 :    
69 :     #include <string.h>
70 :     #include <stdio.h>
71 : Isibaar 1.1
72 :     #include "bitstream.h"
73 :     #include "zigzag.h"
74 : Isibaar 1.2 #include "../quant/quant_matrix.h"
75 : edgomez 1.38 #include "mbcoding.h"
76 : Isibaar 1.1
77 : chenm001 1.6
78 : edgomez 1.14 static uint32_t __inline
79 :     log2bin(uint32_t value)
80 : Isibaar 1.1 {
81 : chenm001 1.6 /* Changed by Chenm001 */
82 : suxen_drol 1.34 #if !defined(_MSC_VER)
83 : Isibaar 1.1 int n = 0;
84 : edgomez 1.14
85 :     while (value) {
86 : Isibaar 1.1 value >>= 1;
87 :     n++;
88 :     }
89 :     return n;
90 : chenm001 1.6 #else
91 : edgomez 1.14 __asm {
92 : suxen_drol 1.15 bsr eax, value
93 :     inc eax
94 :     }
95 : chenm001 1.6 #endif
96 : Isibaar 1.1 }
97 :    
98 :    
99 : edgomez 1.14 static const uint32_t intra_dc_threshold_table[] = {
100 :     32, /* never use */
101 : Isibaar 1.1 13,
102 :     15,
103 :     17,
104 :     19,
105 :     21,
106 :     23,
107 :     1,
108 :     };
109 :    
110 :    
111 : edgomez 1.14 void
112 :     bs_get_matrix(Bitstream * bs,
113 :     uint8_t * matrix)
114 :     {
115 :     int i = 0;
116 :     int last, value = 0;
117 :    
118 :     do {
119 :     last = value;
120 :     value = BitstreamGetBits(bs, 8);
121 :     matrix[scan_tables[0][i++]] = value;
122 :     }
123 :     while (value != 0 && i < 64);
124 : edgomez 1.38 i--; // fix little bug at coeff not full
125 : edgomez 1.14
126 :     while (i < 64) {
127 :     matrix[scan_tables[0][i++]] = last;
128 :     }
129 :     }
130 : Isibaar 1.2
131 : suxen_drol 1.21
132 :    
133 : edgomez 1.38 // for PVOP addbits == fcode - 1
134 :     // for BVOP addbits == max(fcode,bcode) - 1
135 :     // returns mbpos
136 : suxen_drol 1.21 int
137 : edgomez 1.38 read_video_packet_header(Bitstream *bs,
138 :     DECODER * dec,
139 :     const int addbits,
140 :     int * quant,
141 :     int * fcode_forward,
142 :     int * fcode_backward,
143 :     int * intra_dc_threshold)
144 : suxen_drol 1.21 {
145 : edgomez 1.38 int startcode_bits = NUMBITS_VP_RESYNC_MARKER + addbits;
146 :     int mbnum_bits = log2bin(dec->mb_width * dec->mb_height - 1);
147 : suxen_drol 1.21 int mbnum;
148 : edgomez 1.38 int hec = 0;
149 : suxen_drol 1.21
150 :     BitstreamSkip(bs, BitstreamNumBitsToByteAlign(bs));
151 : edgomez 1.38 BitstreamSkip(bs, startcode_bits);
152 : suxen_drol 1.21
153 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_STARTCODE, "<video_packet_header>");
154 : suxen_drol 1.22
155 : edgomez 1.38 if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR)
156 :     {
157 :     hec = BitstreamGetBit(bs); /* header_extension_code */
158 :     if (hec && !(dec->sprite_enable == SPRITE_STATIC /* && current_coding_type = I_VOP */))
159 :     {
160 :     BitstreamSkip(bs, 13); /* vop_width */
161 :     READ_MARKER();
162 :     BitstreamSkip(bs, 13); /* vop_height */
163 :     READ_MARKER();
164 :     BitstreamSkip(bs, 13); /* vop_horizontal_mc_spatial_ref */
165 :     READ_MARKER();
166 :     BitstreamSkip(bs, 13); /* vop_vertical_mc_spatial_ref */
167 :     READ_MARKER();
168 :     }
169 :     }
170 :    
171 :     mbnum = BitstreamGetBits(bs, mbnum_bits); /* macroblock_number */
172 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER, "mbnum %i", mbnum);
173 : suxen_drol 1.21
174 : edgomez 1.38 if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY)
175 :     {
176 :     *quant = BitstreamGetBits(bs, dec->quant_bits); /* quant_scale */
177 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER, "quant %i", *quant);
178 : edgomez 1.38 }
179 : suxen_drol 1.21
180 : edgomez 1.38 if (dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR)
181 :     hec = BitstreamGetBit(bs); /* header_extension_code */
182 : suxen_drol 1.21
183 :    
184 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER, "header_extension_code %i", hec);
185 : edgomez 1.38 if (hec)
186 :     {
187 :     int time_base;
188 :     int time_increment;
189 :     int coding_type;
190 :    
191 :     for (time_base=0; BitstreamGetBit(bs)!=0; time_base++); /* modulo_time_base */
192 :     READ_MARKER();
193 :     if (dec->time_inc_bits)
194 :     time_increment = (BitstreamGetBits(bs, dec->time_inc_bits)); /* vop_time_increment */
195 :     READ_MARKER();
196 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER,"time %i:%i", time_base, time_increment);
197 : edgomez 1.38
198 :     coding_type = BitstreamGetBits(bs, 2);
199 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER,"coding_type %i", coding_type);
200 : edgomez 1.38
201 :     if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR)
202 :     {
203 :     BitstreamSkip(bs, 1); /* change_conv_ratio_disable */
204 :     if (coding_type != I_VOP)
205 :     BitstreamSkip(bs, 1); /* vop_shape_coding_type */
206 :     }
207 :    
208 :     if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY)
209 :     {
210 :     *intra_dc_threshold = intra_dc_threshold_table[BitstreamGetBits(bs, 3)];
211 :    
212 :     if (dec->sprite_enable == SPRITE_GMC && coding_type == S_VOP &&
213 :     dec->sprite_warping_points > 0)
214 :     {
215 :     // TODO: sprite trajectory
216 :     }
217 :     if (dec->reduced_resolution_enable &&
218 :     dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR &&
219 :     (coding_type == P_VOP || coding_type == I_VOP))
220 :     {
221 :     BitstreamSkip(bs, 1); /* XXX: vop_reduced_resolution */
222 :     }
223 :    
224 :     if (coding_type != I_VOP && fcode_forward)
225 :     {
226 :     *fcode_forward = BitstreamGetBits(bs, 3);
227 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER,"fcode_forward %i", *fcode_forward);
228 : edgomez 1.38 }
229 :    
230 :     if (coding_type == B_VOP && fcode_backward)
231 :     {
232 :     *fcode_backward = BitstreamGetBits(bs, 3);
233 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER,"fcode_backward %i", *fcode_backward);
234 : edgomez 1.38 }
235 :     }
236 :    
237 :     }
238 :    
239 :     if (dec->newpred_enable)
240 :     {
241 :     int vop_id;
242 :     int vop_id_for_prediction;
243 :    
244 :     vop_id = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15));
245 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER, "vop_id %i", vop_id);
246 : edgomez 1.38 if (BitstreamGetBit(bs)) /* vop_id_for_prediction_indication */
247 :     {
248 :     vop_id_for_prediction = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15));
249 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER, "vop_id_for_prediction %i", vop_id_for_prediction);
250 : edgomez 1.38 }
251 :     READ_MARKER();
252 :     }
253 : suxen_drol 1.21
254 :     return mbnum;
255 :     }
256 :    
257 :    
258 :    
259 : edgomez 1.38
260 :     /* vol estimation header */
261 :     static void
262 :     read_vol_complexity_estimation_header(Bitstream * bs, DECODER * dec)
263 :     {
264 :     ESTIMATION * e = &dec->estimation;
265 :    
266 :     e->method = BitstreamGetBits(bs, 2); /* estimation_method */
267 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER,"+ complexity_estimation_header; method=%i", e->method);
268 : edgomez 1.38
269 :     if (e->method == 0 || e->method == 1)
270 :     {
271 :     if (!BitstreamGetBit(bs)) /* shape_complexity_estimation_disable */
272 :     {
273 :     e->opaque = BitstreamGetBit(bs); /* opaque */
274 :     e->transparent = BitstreamGetBit(bs); /* transparent */
275 :     e->intra_cae = BitstreamGetBit(bs); /* intra_cae */
276 :     e->inter_cae = BitstreamGetBit(bs); /* inter_cae */
277 :     e->no_update = BitstreamGetBit(bs); /* no_update */
278 :     e->upsampling = BitstreamGetBit(bs); /* upsampling */
279 :     }
280 :    
281 :     if (!BitstreamGetBit(bs)) /* texture_complexity_estimation_set_1_disable */
282 :     {
283 :     e->intra_blocks = BitstreamGetBit(bs); /* intra_blocks */
284 :     e->inter_blocks = BitstreamGetBit(bs); /* inter_blocks */
285 :     e->inter4v_blocks = BitstreamGetBit(bs); /* inter4v_blocks */
286 :     e->not_coded_blocks = BitstreamGetBit(bs); /* not_coded_blocks */
287 :     }
288 :     }
289 :    
290 :     READ_MARKER();
291 :    
292 :     if (!BitstreamGetBit(bs)) /* texture_complexity_estimation_set_2_disable */
293 :     {
294 :     e->dct_coefs = BitstreamGetBit(bs); /* dct_coefs */
295 :     e->dct_lines = BitstreamGetBit(bs); /* dct_lines */
296 :     e->vlc_symbols = BitstreamGetBit(bs); /* vlc_symbols */
297 :     e->vlc_bits = BitstreamGetBit(bs); /* vlc_bits */
298 :     }
299 :    
300 :     if (!BitstreamGetBit(bs)) /* motion_compensation_complexity_disable */
301 :     {
302 :     e->apm = BitstreamGetBit(bs); /* apm */
303 :     e->npm = BitstreamGetBit(bs); /* npm */
304 :     e->interpolate_mc_q = BitstreamGetBit(bs); /* interpolate_mc_q */
305 :     e->forw_back_mc_q = BitstreamGetBit(bs); /* forw_back_mc_q */
306 :     e->halfpel2 = BitstreamGetBit(bs); /* halfpel2 */
307 :     e->halfpel4 = BitstreamGetBit(bs); /* halfpel4 */
308 :     }
309 :    
310 :     READ_MARKER();
311 :    
312 :     if (e->method == 1)
313 :     {
314 :     if (!BitstreamGetBit(bs)) /* version2_complexity_estimation_disable */
315 :     {
316 :     e->sadct = BitstreamGetBit(bs); /* sadct */
317 :     e->quarterpel = BitstreamGetBit(bs); /* quarterpel */
318 :     }
319 :     }
320 :     }
321 :    
322 :    
323 :     /* vop estimation header */
324 :     static void
325 :     read_vop_complexity_estimation_header(Bitstream * bs, DECODER * dec, int coding_type)
326 :     {
327 :     ESTIMATION * e = &dec->estimation;
328 :    
329 :     if (e->method == 0 || e->method == 1)
330 :     {
331 :     if (coding_type == I_VOP) {
332 :     if (e->opaque) BitstreamSkip(bs, 8); /* dcecs_opaque */
333 :     if (e->transparent) BitstreamSkip(bs, 8); /* */
334 :     if (e->intra_cae) BitstreamSkip(bs, 8); /* */
335 :     if (e->inter_cae) BitstreamSkip(bs, 8); /* */
336 :     if (e->no_update) BitstreamSkip(bs, 8); /* */
337 :     if (e->upsampling) BitstreamSkip(bs, 8); /* */
338 :     if (e->intra_blocks) BitstreamSkip(bs, 8); /* */
339 :     if (e->not_coded_blocks) BitstreamSkip(bs, 8); /* */
340 :     if (e->dct_coefs) BitstreamSkip(bs, 8); /* */
341 :     if (e->dct_lines) BitstreamSkip(bs, 8); /* */
342 :     if (e->vlc_symbols) BitstreamSkip(bs, 8); /* */
343 :     if (e->vlc_bits) BitstreamSkip(bs, 8); /* */
344 :     if (e->sadct) BitstreamSkip(bs, 8); /* */
345 :     }
346 :    
347 :     if (coding_type == P_VOP) {
348 :     if (e->opaque) BitstreamSkip(bs, 8); /* */
349 :     if (e->transparent) BitstreamSkip(bs, 8); /* */
350 :     if (e->intra_cae) BitstreamSkip(bs, 8); /* */
351 :     if (e->inter_cae) BitstreamSkip(bs, 8); /* */
352 :     if (e->no_update) BitstreamSkip(bs, 8); /* */
353 :     if (e->upsampling) BitstreamSkip(bs, 8); /* */
354 :     if (e->intra_blocks) BitstreamSkip(bs, 8); /* */
355 :     if (e->not_coded_blocks) BitstreamSkip(bs, 8); /* */
356 :     if (e->dct_coefs) BitstreamSkip(bs, 8); /* */
357 :     if (e->dct_lines) BitstreamSkip(bs, 8); /* */
358 :     if (e->vlc_symbols) BitstreamSkip(bs, 8); /* */
359 :     if (e->vlc_bits) BitstreamSkip(bs, 8); /* */
360 :     if (e->inter_blocks) BitstreamSkip(bs, 8); /* */
361 :     if (e->inter4v_blocks) BitstreamSkip(bs, 8); /* */
362 :     if (e->apm) BitstreamSkip(bs, 8); /* */
363 :     if (e->npm) BitstreamSkip(bs, 8); /* */
364 :     if (e->forw_back_mc_q) BitstreamSkip(bs, 8); /* */
365 :     if (e->halfpel2) BitstreamSkip(bs, 8); /* */
366 :     if (e->halfpel4) BitstreamSkip(bs, 8); /* */
367 :     if (e->sadct) BitstreamSkip(bs, 8); /* */
368 :     if (e->quarterpel) BitstreamSkip(bs, 8); /* */
369 :     }
370 :     if (coding_type == B_VOP) {
371 :     if (e->opaque) BitstreamSkip(bs, 8); /* */
372 :     if (e->transparent) BitstreamSkip(bs, 8); /* */
373 :     if (e->intra_cae) BitstreamSkip(bs, 8); /* */
374 :     if (e->inter_cae) BitstreamSkip(bs, 8); /* */
375 :     if (e->no_update) BitstreamSkip(bs, 8); /* */
376 :     if (e->upsampling) BitstreamSkip(bs, 8); /* */
377 :     if (e->intra_blocks) BitstreamSkip(bs, 8); /* */
378 :     if (e->not_coded_blocks) BitstreamSkip(bs, 8); /* */
379 :     if (e->dct_coefs) BitstreamSkip(bs, 8); /* */
380 :     if (e->dct_lines) BitstreamSkip(bs, 8); /* */
381 :     if (e->vlc_symbols) BitstreamSkip(bs, 8); /* */
382 :     if (e->vlc_bits) BitstreamSkip(bs, 8); /* */
383 :     if (e->inter_blocks) BitstreamSkip(bs, 8); /* */
384 :     if (e->inter4v_blocks) BitstreamSkip(bs, 8); /* */
385 :     if (e->apm) BitstreamSkip(bs, 8); /* */
386 :     if (e->npm) BitstreamSkip(bs, 8); /* */
387 :     if (e->forw_back_mc_q) BitstreamSkip(bs, 8); /* */
388 :     if (e->halfpel2) BitstreamSkip(bs, 8); /* */
389 :     if (e->halfpel4) BitstreamSkip(bs, 8); /* */
390 :     if (e->interpolate_mc_q) BitstreamSkip(bs, 8); /* */
391 :     if (e->sadct) BitstreamSkip(bs, 8); /* */
392 :     if (e->quarterpel) BitstreamSkip(bs, 8); /* */
393 :     }
394 :    
395 :     if (coding_type == S_VOP && dec->sprite_enable == SPRITE_STATIC) {
396 :     if (e->intra_blocks) BitstreamSkip(bs, 8); /* */
397 :     if (e->not_coded_blocks) BitstreamSkip(bs, 8); /* */
398 :     if (e->dct_coefs) BitstreamSkip(bs, 8); /* */
399 :     if (e->dct_lines) BitstreamSkip(bs, 8); /* */
400 :     if (e->vlc_symbols) BitstreamSkip(bs, 8); /* */
401 :     if (e->vlc_bits) BitstreamSkip(bs, 8); /* */
402 :     if (e->inter_blocks) BitstreamSkip(bs, 8); /* */
403 :     if (e->inter4v_blocks) BitstreamSkip(bs, 8); /* */
404 :     if (e->apm) BitstreamSkip(bs, 8); /* */
405 :     if (e->npm) BitstreamSkip(bs, 8); /* */
406 :     if (e->forw_back_mc_q) BitstreamSkip(bs, 8); /* */
407 :     if (e->halfpel2) BitstreamSkip(bs, 8); /* */
408 :     if (e->halfpel4) BitstreamSkip(bs, 8); /* */
409 :     if (e->interpolate_mc_q) BitstreamSkip(bs, 8); /* */
410 :     }
411 :     }
412 :     }
413 :    
414 :    
415 :    
416 :    
417 :    
418 : Isibaar 1.1 /*
419 :     decode headers
420 :     returns coding_type, or -1 if error
421 :     */
422 :    
423 : suxen_drol 1.22 #define VIDOBJ_START_CODE_MASK 0x0000001f
424 :     #define VIDOBJLAY_START_CODE_MASK 0x0000000f
425 :    
426 : edgomez 1.14 int
427 :     BitstreamReadHeaders(Bitstream * bs,
428 :     DECODER * dec,
429 :     uint32_t * rounding,
430 : edgomez 1.38 uint32_t * reduced_resolution,
431 : edgomez 1.14 uint32_t * quant,
432 :     uint32_t * fcode_forward,
433 :     uint32_t * fcode_backward,
434 : edgomez 1.38 uint32_t * intra_dc_threshold,
435 :     WARPPOINTS *gmc_warp)
436 : Isibaar 1.1 {
437 :     uint32_t vol_ver_id;
438 :     uint32_t coding_type;
439 :     uint32_t start_code;
440 : edgomez 1.14 uint32_t time_incr = 0;
441 : edgomez 1.39 int32_t time_increment = 0;
442 : edgomez 1.38 int resize = 0;
443 : chenm001 1.9
444 : edgomez 1.14 do {
445 : edgomez 1.38
446 : Isibaar 1.1 BitstreamByteAlign(bs);
447 :     start_code = BitstreamShowBits(bs, 32);
448 :    
449 : edgomez 1.14 if (start_code == VISOBJSEQ_START_CODE) {
450 : suxen_drol 1.22
451 :     int profile;
452 :    
453 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_STARTCODE, "<visual_object_sequence>");
454 : suxen_drol 1.22
455 : edgomez 1.38 BitstreamSkip(bs, 32); // visual_object_sequence_start_code
456 :     profile = BitstreamGetBits(bs, 8); // profile_and_level_indication
457 : suxen_drol 1.22
458 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER, "profile_and_level_indication %i", profile);
459 : suxen_drol 1.22
460 : edgomez 1.14 } else if (start_code == VISOBJSEQ_STOP_CODE) {
461 : suxen_drol 1.22
462 : edgomez 1.38 BitstreamSkip(bs, 32); // visual_object_sequence_stop_code
463 : suxen_drol 1.22
464 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_STARTCODE, "</visual_object_sequence>");
465 : suxen_drol 1.22
466 : edgomez 1.14 } else if (start_code == VISOBJ_START_CODE) {
467 : edgomez 1.38 int visobj_ver_id;
468 : suxen_drol 1.22
469 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_STARTCODE, "<visual_object>");
470 : suxen_drol 1.22
471 : edgomez 1.38 BitstreamSkip(bs, 32); // visual_object_start_code
472 :     if (BitstreamGetBit(bs)) // is_visual_object_identified
473 : Isibaar 1.1 {
474 : edgomez 1.38 visobj_ver_id = BitstreamGetBits(bs, 4); // visual_object_ver_id
475 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER,"visobj_ver_id %i", visobj_ver_id);
476 : edgomez 1.38 BitstreamSkip(bs, 3); // visual_object_priority
477 : edgomez 1.14 } else {
478 : edgomez 1.38 visobj_ver_id = 1;
479 : Isibaar 1.1 }
480 :    
481 : edgomez 1.38 if (BitstreamShowBits(bs, 4) != VISOBJ_TYPE_VIDEO) // visual_object_type
482 : Isibaar 1.1 {
483 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_ERROR, "visual_object_type != video");
484 : Isibaar 1.1 return -1;
485 :     }
486 :     BitstreamSkip(bs, 4);
487 :    
488 : edgomez 1.38 // video_signal_type
489 : Isibaar 1.1
490 : edgomez 1.38 if (BitstreamGetBit(bs)) // video_signal_type
491 : Isibaar 1.1 {
492 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER,"+ video_signal_type");
493 : edgomez 1.38 BitstreamSkip(bs, 3); // video_format
494 :     BitstreamSkip(bs, 1); // video_range
495 :     if (BitstreamGetBit(bs)) // color_description
496 : Isibaar 1.1 {
497 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER,"+ color_description");
498 : edgomez 1.38 BitstreamSkip(bs, 8); // color_primaries
499 :     BitstreamSkip(bs, 8); // transfer_characteristics
500 :     BitstreamSkip(bs, 8); // matrix_coefficients
501 : Isibaar 1.1 }
502 :     }
503 : suxen_drol 1.22 } else if ((start_code & ~VIDOBJ_START_CODE_MASK) == VIDOBJ_START_CODE) {
504 :    
505 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_STARTCODE, "<video_object>");
506 :     DPRINTF(XVID_DEBUG_HEADER, "vo id %i", start_code & VIDOBJ_START_CODE_MASK);
507 : suxen_drol 1.22
508 : edgomez 1.38 BitstreamSkip(bs, 32); // video_object_start_code
509 : suxen_drol 1.22
510 :     } else if ((start_code & ~VIDOBJLAY_START_CODE_MASK) == VIDOBJLAY_START_CODE) {
511 :    
512 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_STARTCODE, "<video_object_layer>");
513 :     DPRINTF(XVID_DEBUG_HEADER, "vol id %i", start_code & VIDOBJLAY_START_CODE_MASK);
514 : suxen_drol 1.22
515 : edgomez 1.38 BitstreamSkip(bs, 32); // video_object_layer_start_code
516 :     BitstreamSkip(bs, 1); // random_accessible_vol
517 : Isibaar 1.1
518 : suxen_drol 1.39.2.7 BitstreamSkip(bs, 8); // video_object_type_indication
519 : Isibaar 1.1
520 : edgomez 1.38 if (BitstreamGetBit(bs)) // is_object_layer_identifier
521 : Isibaar 1.1 {
522 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER, "+ is_object_layer_identifier");
523 : edgomez 1.38 vol_ver_id = BitstreamGetBits(bs, 4); // video_object_layer_verid
524 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER,"ver_id %i", vol_ver_id);
525 : edgomez 1.38 BitstreamSkip(bs, 3); // video_object_layer_priority
526 : edgomez 1.14 } else {
527 : Isibaar 1.1 vol_ver_id = 1;
528 :     }
529 :    
530 : edgomez 1.38 dec->aspect_ratio = BitstreamGetBits(bs, 4);
531 :    
532 :     if (dec->aspect_ratio == VIDOBJLAY_AR_EXTPAR) // aspect_ratio_info
533 : Isibaar 1.1 {
534 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER, "+ aspect_ratio_info");
535 : edgomez 1.38 dec->par_width = BitstreamGetBits(bs, 8); // par_width
536 :     dec->par_height = BitstreamGetBits(bs, 8); // par_height
537 : Isibaar 1.1 }
538 :    
539 : edgomez 1.38 if (BitstreamGetBit(bs)) // vol_control_parameters
540 : Isibaar 1.1 {
541 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER, "+ vol_control_parameters");
542 : edgomez 1.38 BitstreamSkip(bs, 2); // chroma_format
543 :     dec->low_delay = BitstreamGetBit(bs); // low_delay
544 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER, "low_delay %i", dec->low_delay);
545 : edgomez 1.38 if (BitstreamGetBit(bs)) // vbv_parameters
546 : Isibaar 1.1 {
547 : edgomez 1.38 unsigned int bitrate;
548 :     unsigned int buffer_size;
549 :     unsigned int occupancy;
550 :    
551 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER,"+ vbv_parameters");
552 : edgomez 1.38
553 :     bitrate = BitstreamGetBits(bs,15) << 15; // first_half_bit_rate
554 : Isibaar 1.1 READ_MARKER();
555 : edgomez 1.38 bitrate |= BitstreamGetBits(bs,15); // latter_half_bit_rate
556 : Isibaar 1.1 READ_MARKER();
557 : edgomez 1.38
558 :     buffer_size = BitstreamGetBits(bs, 15) << 3; // first_half_vbv_buffer_size
559 : Isibaar 1.1 READ_MARKER();
560 : edgomez 1.38 buffer_size |= BitstreamGetBits(bs, 3); // latter_half_vbv_buffer_size
561 :    
562 :     occupancy = BitstreamGetBits(bs, 11) << 15; // first_half_vbv_occupancy
563 : Isibaar 1.1 READ_MARKER();
564 : edgomez 1.38 occupancy |= BitstreamGetBits(bs, 15); // latter_half_vbv_occupancy
565 : Isibaar 1.1 READ_MARKER();
566 : edgomez 1.14
567 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER,"bitrate %d (unit=400 bps)", bitrate);
568 :     DPRINTF(XVID_DEBUG_HEADER,"buffer_size %d (unit=16384 bits)", buffer_size);
569 :     DPRINTF(XVID_DEBUG_HEADER,"occupancy %d (unit=64 bits)", occupancy);
570 : Isibaar 1.1 }
571 : edgomez 1.38 }else{
572 :     dec->low_delay = dec->low_delay_default;
573 : Isibaar 1.1 }
574 :    
575 : edgomez 1.38 dec->shape = BitstreamGetBits(bs, 2); // video_object_layer_shape
576 :    
577 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER, "shape %i", dec->shape);
578 : edgomez 1.38 if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR)
579 :     {
580 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_ERROR,"non-rectangular shapes are not supported");
581 : edgomez 1.38 }
582 : edgomez 1.14
583 :     if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE && vol_ver_id != 1) {
584 : edgomez 1.38 BitstreamSkip(bs, 4); // video_object_layer_shape_extension
585 : Isibaar 1.1 }
586 :    
587 :     READ_MARKER();
588 :    
589 : edgomez 1.38 // *************************** for decode B-frame time ***********************
590 :     dec->time_inc_resolution = BitstreamGetBits(bs, 16); // vop_time_increment_resolution
591 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER,"vop_time_increment_resolution %i", dec->time_inc_resolution);
592 : suxen_drol 1.22
593 : edgomez 1.38 // dec->time_inc_resolution--;
594 : suxen_drol 1.22
595 : edgomez 1.38 if (dec->time_inc_resolution > 0) {
596 :     dec->time_inc_bits = log2bin(dec->time_inc_resolution-1);
597 : edgomez 1.14 } else {
598 : edgomez 1.38 // dec->time_inc_bits = 0;
599 :     // for "old" xvid compatibility, set time_inc_bits = 1
600 : Isibaar 1.1 dec->time_inc_bits = 1;
601 :     }
602 :    
603 :     READ_MARKER();
604 :    
605 : edgomez 1.38 if (BitstreamGetBit(bs)) // fixed_vop_rate
606 : Isibaar 1.1 {
607 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER, "+ fixed_vop_rate");
608 : edgomez 1.38 BitstreamSkip(bs, dec->time_inc_bits); // fixed_vop_time_increment
609 : Isibaar 1.1 }
610 :    
611 : edgomez 1.14 if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) {
612 : Isibaar 1.1
613 : edgomez 1.14 if (dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR) {
614 : Isibaar 1.1 uint32_t width, height;
615 :    
616 :     READ_MARKER();
617 : edgomez 1.38 width = BitstreamGetBits(bs, 13); // video_object_layer_width
618 : Isibaar 1.1 READ_MARKER();
619 : edgomez 1.38 height = BitstreamGetBits(bs, 13); // video_object_layer_height
620 : Isibaar 1.1 READ_MARKER();
621 :    
622 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER, "width %i", width);
623 :     DPRINTF(XVID_DEBUG_HEADER, "height %i", height);
624 : chenm001 1.23
625 : edgomez 1.38 if (dec->width != width || dec->height != height)
626 :     {
627 :     if (dec->fixed_dimensions)
628 :     {
629 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_ERROR, "decoder width/height does not match bitstream");
630 : edgomez 1.38 return -1;
631 :     }
632 :     resize = 1;
633 : chenm001 1.23 dec->width = width;
634 :     dec->height = height;
635 : Isibaar 1.1 }
636 :     }
637 : h 1.4
638 : suxen_drol 1.22 dec->interlacing = BitstreamGetBit(bs);
639 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER, "interlacing %i", dec->interlacing);
640 : Isibaar 1.1
641 : edgomez 1.38 if (!BitstreamGetBit(bs)) // obmc_disable
642 : Isibaar 1.1 {
643 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_ERROR, "obmc_disabled==false not supported");
644 : edgomez 1.38 // TODO
645 :     // fucking divx4.02 has this enabled
646 : Isibaar 1.1 }
647 :    
648 : edgomez 1.38 dec->sprite_enable = BitstreamGetBits(bs, (vol_ver_id == 1 ? 1 : 2)); // sprite_enable
649 :    
650 :     if (dec->sprite_enable == SPRITE_STATIC || dec->sprite_enable == SPRITE_GMC)
651 : Isibaar 1.1 {
652 : edgomez 1.38 int low_latency_sprite_enable;
653 :    
654 :     if (dec->sprite_enable != SPRITE_GMC)
655 :     {
656 :     int sprite_width;
657 :     int sprite_height;
658 :     int sprite_left_coord;
659 :     int sprite_top_coord;
660 :     sprite_width = BitstreamGetBits(bs, 13); // sprite_width
661 :     READ_MARKER();
662 :     sprite_height = BitstreamGetBits(bs, 13); // sprite_height
663 :     READ_MARKER();
664 :     sprite_left_coord = BitstreamGetBits(bs, 13); // sprite_left_coordinate
665 :     READ_MARKER();
666 :     sprite_top_coord = BitstreamGetBits(bs, 13); // sprite_top_coordinate
667 :     READ_MARKER();
668 :     }
669 :     dec->sprite_warping_points = BitstreamGetBits(bs, 6); // no_of_sprite_warping_points
670 :     dec->sprite_warping_accuracy = BitstreamGetBits(bs, 2); // sprite_warping_accuracy
671 :     dec->sprite_brightness_change = BitstreamGetBits(bs, 1); // brightness_change
672 :     if (dec->sprite_enable != SPRITE_GMC)
673 :     {
674 :     low_latency_sprite_enable = BitstreamGetBits(bs, 1); // low_latency_sprite_enable
675 :     }
676 : Isibaar 1.1 }
677 : edgomez 1.14
678 :     if (vol_ver_id != 1 &&
679 :     dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) {
680 : edgomez 1.38 BitstreamSkip(bs, 1); // sadct_disable
681 : Isibaar 1.1 }
682 :    
683 : edgomez 1.38 if (BitstreamGetBit(bs)) // not_8_bit
684 : Isibaar 1.1 {
685 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER, "not_8_bit==true (ignored)");
686 : edgomez 1.38 dec->quant_bits = BitstreamGetBits(bs, 4); // quant_precision
687 :     BitstreamSkip(bs, 4); // bits_per_pixel
688 : edgomez 1.14 } else {
689 : Isibaar 1.1 dec->quant_bits = 5;
690 :     }
691 :    
692 : edgomez 1.14 if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) {
693 : edgomez 1.38 BitstreamSkip(bs, 1); // no_gray_quant_update
694 :     BitstreamSkip(bs, 1); // composition_method
695 :     BitstreamSkip(bs, 1); // linear_composition
696 : Isibaar 1.1 }
697 :    
698 : edgomez 1.38 dec->quant_type = BitstreamGetBit(bs); // quant_type
699 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER, "quant_type %i", dec->quant_type);
700 : Isibaar 1.1
701 : edgomez 1.14 if (dec->quant_type) {
702 : edgomez 1.38 if (BitstreamGetBit(bs)) // load_intra_quant_mat
703 : Isibaar 1.1 {
704 : Isibaar 1.3 uint8_t matrix[64];
705 : edgomez 1.14
706 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER, "load_intra_quant_mat");
707 : suxen_drol 1.22
708 : Isibaar 1.2 bs_get_matrix(bs, matrix);
709 :     set_intra_matrix(matrix);
710 : edgomez 1.14 } else
711 : Isibaar 1.3 set_intra_matrix(get_default_intra_matrix());
712 : Isibaar 1.2
713 : edgomez 1.38 if (BitstreamGetBit(bs)) // load_inter_quant_mat
714 : Isibaar 1.1 {
715 : edgomez 1.14 uint8_t matrix[64];
716 : suxen_drol 1.22
717 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER, "load_inter_quant_mat");
718 : edgomez 1.14
719 : Isibaar 1.2 bs_get_matrix(bs, matrix);
720 :     set_inter_matrix(matrix);
721 : edgomez 1.14 } else
722 : Isibaar 1.3 set_inter_matrix(get_default_inter_matrix());
723 : Isibaar 1.1
724 : edgomez 1.14 if (dec->shape == VIDOBJLAY_SHAPE_GRAYSCALE) {
725 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_ERROR, "greyscale matrix not supported");
726 : Isibaar 1.1 return -1;
727 :     }
728 : Isibaar 1.2
729 : Isibaar 1.1 }
730 :    
731 : edgomez 1.14
732 :     if (vol_ver_id != 1) {
733 : edgomez 1.38 dec->quarterpel = BitstreamGetBit(bs); // quarter_sample
734 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER,"quarterpel %i", dec->quarterpel);
735 : Isibaar 1.26 }
736 :     else
737 : Isibaar 1.1 dec->quarterpel = 0;
738 : Isibaar 1.26
739 : Isibaar 1.1
740 : edgomez 1.38 dec->complexity_estimation_disable = BitstreamGetBit(bs); /* complexity estimation disable */
741 :     if (!dec->complexity_estimation_disable)
742 : Isibaar 1.1 {
743 : edgomez 1.38 read_vol_complexity_estimation_header(bs, dec);
744 : Isibaar 1.1 }
745 :    
746 : edgomez 1.38 BitstreamSkip(bs, 1); // resync_marker_disable
747 : Isibaar 1.1
748 : edgomez 1.38 if (BitstreamGetBit(bs)) // data_partitioned
749 : Isibaar 1.1 {
750 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_ERROR, "data_partitioned not supported");
751 : edgomez 1.38 BitstreamSkip(bs, 1); // reversible_vlc
752 : Isibaar 1.1 }
753 :    
754 : edgomez 1.14 if (vol_ver_id != 1) {
755 : edgomez 1.38 dec->newpred_enable = BitstreamGetBit(bs);
756 :     if (dec->newpred_enable) // newpred_enable
757 : Isibaar 1.1 {
758 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER, "+ newpred_enable");
759 : edgomez 1.38 BitstreamSkip(bs, 2); // requested_upstream_message_type
760 :     BitstreamSkip(bs, 1); // newpred_segment_type
761 : Isibaar 1.1 }
762 : edgomez 1.38 dec->reduced_resolution_enable = BitstreamGetBit(bs); /* reduced_resolution_vop_enable */
763 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER, "reduced_resolution_enable %i", dec->reduced_resolution_enable);
764 : edgomez 1.38 }
765 :     else
766 :     {
767 :     dec->newpred_enable = 0;
768 :     dec->reduced_resolution_enable = 0;
769 : Isibaar 1.1 }
770 : edgomez 1.14
771 : edgomez 1.38 dec->scalability = BitstreamGetBit(bs); /* scalability */
772 :     if (dec->scalability)
773 : Isibaar 1.1 {
774 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_ERROR, "scalability not supported");
775 : edgomez 1.38 BitstreamSkip(bs, 1); /* hierarchy_type */
776 :     BitstreamSkip(bs, 4); /* ref_layer_id */
777 :     BitstreamSkip(bs, 1); /* ref_layer_sampling_direc */
778 :     BitstreamSkip(bs, 5); /* hor_sampling_factor_n */
779 :     BitstreamSkip(bs, 5); /* hor_sampling_factor_m */
780 :     BitstreamSkip(bs, 5); /* vert_sampling_factor_n */
781 :     BitstreamSkip(bs, 5); /* vert_sampling_factor_m */
782 :     BitstreamSkip(bs, 1); /* enhancement_type */
783 :     if(dec->shape == VIDOBJLAY_SHAPE_BINARY /* && hierarchy_type==0 */) {
784 :     BitstreamSkip(bs, 1); /* use_ref_shape */
785 :     BitstreamSkip(bs, 1); /* use_ref_texture */
786 :     BitstreamSkip(bs, 5); /* shape_hor_sampling_factor_n */
787 :     BitstreamSkip(bs, 5); /* shape_hor_sampling_factor_m */
788 :     BitstreamSkip(bs, 5); /* shape_vert_sampling_factor_n */
789 :     BitstreamSkip(bs, 5); /* shape_vert_sampling_factor_m */
790 :     }
791 : Isibaar 1.1 return -1;
792 :     }
793 : edgomez 1.38 } else // dec->shape == BINARY_ONLY
794 : Isibaar 1.1 {
795 : edgomez 1.14 if (vol_ver_id != 1) {
796 : edgomez 1.38 dec->scalability = BitstreamGetBit(bs); /* scalability */
797 :     if (dec->scalability)
798 : Isibaar 1.1 {
799 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_ERROR, "scalability not supported");
800 : edgomez 1.38 BitstreamSkip(bs, 4); /* ref_layer_id */
801 :     BitstreamSkip(bs, 5); /* hor_sampling_factor_n */
802 :     BitstreamSkip(bs, 5); /* hor_sampling_factor_m */
803 :     BitstreamSkip(bs, 5); /* vert_sampling_factor_n */
804 :     BitstreamSkip(bs, 5); /* vert_sampling_factor_m */
805 : Isibaar 1.1 return -1;
806 :     }
807 :     }
808 : edgomez 1.38 BitstreamSkip(bs, 1); // resync_marker_disable
809 : Isibaar 1.1
810 :     }
811 :    
812 : edgomez 1.38 return (resize ? -3 : -2 ); /* VOL */
813 :    
814 : edgomez 1.14 } else if (start_code == GRPOFVOP_START_CODE) {
815 : suxen_drol 1.22
816 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_STARTCODE, "<group_of_vop>");
817 : suxen_drol 1.22
818 : Isibaar 1.1 BitstreamSkip(bs, 32);
819 :     {
820 :     int hours, minutes, seconds;
821 : edgomez 1.14
822 : Isibaar 1.1 hours = BitstreamGetBits(bs, 5);
823 :     minutes = BitstreamGetBits(bs, 6);
824 :     READ_MARKER();
825 :     seconds = BitstreamGetBits(bs, 6);
826 : suxen_drol 1.22
827 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER, "time %ih%im%is", hours,minutes,seconds);
828 : Isibaar 1.1 }
829 : edgomez 1.38 BitstreamSkip(bs, 1); // closed_gov
830 :     BitstreamSkip(bs, 1); // broken_link
831 : suxen_drol 1.22
832 : edgomez 1.14 } else if (start_code == VOP_START_CODE) {
833 : suxen_drol 1.22
834 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_STARTCODE, "<vop>");
835 : suxen_drol 1.22
836 : edgomez 1.38 BitstreamSkip(bs, 32); // vop_start_code
837 : Isibaar 1.1
838 : edgomez 1.38 coding_type = BitstreamGetBits(bs, 2); // vop_coding_type
839 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER, "coding_type %i", coding_type);
840 : Isibaar 1.1
841 : edgomez 1.38 // *************************** for decode B-frame time ***********************
842 :     while (BitstreamGetBit(bs) != 0) // time_base
843 : chenm001 1.9 time_incr++;
844 : edgomez 1.14
845 : Isibaar 1.1 READ_MARKER();
846 : edgomez 1.14
847 :     if (dec->time_inc_bits) {
848 : edgomez 1.38 time_increment = (BitstreamGetBits(bs, dec->time_inc_bits)); // vop_time_increment
849 : chenm001 1.9 }
850 : suxen_drol 1.19
851 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER, "time_base %i", time_incr);
852 :     DPRINTF(XVID_DEBUG_HEADER, "time_increment %i", time_increment);
853 : suxen_drol 1.22
854 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_TIMECODE, "%c %i:%i",
855 : edgomez 1.38 coding_type == I_VOP ? 'I' : coding_type == P_VOP ? 'P' : coding_type == B_VOP ? 'B' : 'S',
856 : suxen_drol 1.19 time_incr, time_increment);
857 :    
858 : edgomez 1.14 if (coding_type != B_VOP) {
859 :     dec->last_time_base = dec->time_base;
860 : chenm001 1.9 dec->time_base += time_incr;
861 : chl 1.25 dec->time = time_increment;
862 :    
863 : edgomez 1.38 /* dec->time_base * dec->time_inc_resolution +
864 : edgomez 1.14 time_increment;
865 : chl 1.25 */ dec->time_pp = (uint32_t)
866 : edgomez 1.38 (dec->time_inc_resolution + dec->time - dec->last_non_b_time)%dec->time_inc_resolution;
867 : edgomez 1.14 dec->last_non_b_time = dec->time;
868 :     } else {
869 : chl 1.25 dec->time = time_increment;
870 :     /*
871 : edgomez 1.14 (dec->last_time_base +
872 : edgomez 1.38 time_incr) * dec->time_inc_resolution + time_increment;
873 : chl 1.25 */
874 : chl 1.24 dec->time_bp = (uint32_t)
875 : edgomez 1.38 (dec->time_inc_resolution + dec->last_non_b_time - dec->time)%dec->time_inc_resolution;
876 : Isibaar 1.1 }
877 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER,"time_pp=%i", dec->time_pp);
878 :     DPRINTF(XVID_DEBUG_HEADER,"time_bp=%i", dec->time_bp);
879 : Isibaar 1.1
880 :     READ_MARKER();
881 :    
882 : edgomez 1.38 if (!BitstreamGetBit(bs)) // vop_coded
883 : Isibaar 1.1 {
884 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER, "vop_coded==false");
885 : Isibaar 1.1 return N_VOP;
886 :     }
887 :    
888 : edgomez 1.38 if (dec->newpred_enable)
889 :     {
890 :     int vop_id;
891 :     int vop_id_for_prediction;
892 :    
893 :     vop_id = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15));
894 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER, "vop_id %i", vop_id);
895 : edgomez 1.38 if (BitstreamGetBit(bs)) /* vop_id_for_prediction_indication */
896 :     {
897 :     vop_id_for_prediction = BitstreamGetBits(bs, MIN(dec->time_inc_bits + 3, 15));
898 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER, "vop_id_for_prediction %i", vop_id_for_prediction);
899 : edgomez 1.38 }
900 :     READ_MARKER();
901 :     }
902 :    
903 :    
904 : Isibaar 1.1
905 : edgomez 1.38 // fix a little bug by MinChen <chenm002@163.com>
906 : edgomez 1.14 if ((dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) &&
907 : edgomez 1.38 ( (coding_type == P_VOP) || (coding_type == S_VOP && dec->sprite_enable == SPRITE_GMC) ) ) {
908 :     *rounding = BitstreamGetBit(bs); // rounding_type
909 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER, "rounding %i", *rounding);
910 : Isibaar 1.1 }
911 :    
912 : edgomez 1.38 if (dec->reduced_resolution_enable &&
913 :     dec->shape == VIDOBJLAY_SHAPE_RECTANGULAR &&
914 :     (coding_type == P_VOP || coding_type == I_VOP)) {
915 :    
916 :     *reduced_resolution = BitstreamGetBit(bs);
917 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER, "reduced_resolution %i", *reduced_resolution);
918 : edgomez 1.38 }
919 :     else
920 :     {
921 :     *reduced_resolution = 0;
922 :     }
923 : Isibaar 1.1
924 : edgomez 1.14 if (dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) {
925 : edgomez 1.38 if(!(dec->sprite_enable == SPRITE_STATIC && coding_type == I_VOP)) {
926 : edgomez 1.14
927 : edgomez 1.38 uint32_t width, height;
928 :     uint32_t horiz_mc_ref, vert_mc_ref;
929 : Isibaar 1.1
930 : edgomez 1.38 width = BitstreamGetBits(bs, 13);
931 :     READ_MARKER();
932 :     height = BitstreamGetBits(bs, 13);
933 :     READ_MARKER();
934 :     horiz_mc_ref = BitstreamGetBits(bs, 13);
935 :     READ_MARKER();
936 :     vert_mc_ref = BitstreamGetBits(bs, 13);
937 :     READ_MARKER();
938 : Isibaar 1.1
939 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER, "width %i", width);
940 :     DPRINTF(XVID_DEBUG_HEADER, "height %i", height);
941 :     DPRINTF(XVID_DEBUG_HEADER, "horiz_mc_ref %i", horiz_mc_ref);
942 :     DPRINTF(XVID_DEBUG_HEADER, "vert_mc_ref %i", vert_mc_ref);
943 : edgomez 1.38 }
944 :    
945 :     BitstreamSkip(bs, 1); // change_conv_ratio_disable
946 :     if (BitstreamGetBit(bs)) // vop_constant_alpha
947 : Isibaar 1.1 {
948 : edgomez 1.38 BitstreamSkip(bs, 8); // vop_constant_alpha_value
949 : Isibaar 1.1 }
950 :     }
951 :    
952 : edgomez 1.38 if (dec->shape != VIDOBJLAY_SHAPE_BINARY_ONLY) {
953 : edgomez 1.14
954 : edgomez 1.38 if (!dec->complexity_estimation_disable)
955 :     {
956 :     read_vop_complexity_estimation_header(bs, dec, coding_type);
957 :     }
958 :    
959 :     // intra_dc_vlc_threshold
960 : edgomez 1.14 *intra_dc_threshold =
961 :     intra_dc_threshold_table[BitstreamGetBits(bs, 3)];
962 : Isibaar 1.1
963 : edgomez 1.38 dec->top_field_first = 0;
964 :     dec->alternate_vertical_scan = 0;
965 :    
966 : edgomez 1.14 if (dec->interlacing) {
967 : suxen_drol 1.22 dec->top_field_first = BitstreamGetBit(bs);
968 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER, "interlace top_field_first %i", dec->top_field_first);
969 : suxen_drol 1.22 dec->alternate_vertical_scan = BitstreamGetBit(bs);
970 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER, "interlace alternate_vertical_scan %i", dec->alternate_vertical_scan);
971 : suxen_drol 1.22
972 : h 1.4 }
973 : Isibaar 1.1 }
974 : edgomez 1.14
975 : edgomez 1.38 if ((dec->sprite_enable == SPRITE_STATIC || dec->sprite_enable== SPRITE_GMC) && coding_type == S_VOP) {
976 :    
977 :     int i;
978 :    
979 :     for (i = 0 ; i < dec->sprite_warping_points; i++)
980 :     {
981 :     int length;
982 :     int x = 0, y = 0;
983 :    
984 :     /* sprite code borowed from ffmpeg; thx Michael Niedermayer <michaelni@gmx.at> */
985 :     length = bs_get_spritetrajectory(bs);
986 :     if(length){
987 :     x= BitstreamGetBits(bs, length);
988 :     if ((x >> (length - 1)) == 0) /* if MSB not set it is negative*/
989 :     x = - (x ^ ((1 << length) - 1));
990 :     }
991 :     READ_MARKER();
992 :    
993 :     length = bs_get_spritetrajectory(bs);
994 :     if(length){
995 :     y = BitstreamGetBits(bs, length);
996 :     if ((y >> (length - 1)) == 0) /* if MSB not set it is negative*/
997 :     y = - (y ^ ((1 << length) - 1));
998 :     }
999 :     READ_MARKER();
1000 :    
1001 :     gmc_warp->duv[i].x = x;
1002 :     gmc_warp->duv[i].y = y;
1003 :    
1004 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER,"sprite_warping_point[%i] xy=(%i,%i)", i, x, y);
1005 : edgomez 1.38 }
1006 :    
1007 :     if (dec->sprite_brightness_change)
1008 :     {
1009 :     // XXX: brightness_change_factor()
1010 :     }
1011 :     if (dec->sprite_enable == SPRITE_STATIC)
1012 :     {
1013 :     // XXX: todo
1014 :     }
1015 :    
1016 :     }
1017 :    
1018 :     if ((*quant = BitstreamGetBits(bs, dec->quant_bits)) < 1) // vop_quant
1019 : Isibaar 1.10 *quant = 1;
1020 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER, "quant %i", *quant);
1021 : edgomez 1.14
1022 :     if (coding_type != I_VOP) {
1023 : edgomez 1.38 *fcode_forward = BitstreamGetBits(bs, 3); // fcode_forward
1024 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER, "fcode_forward %i", *fcode_forward);
1025 : Isibaar 1.1 }
1026 : edgomez 1.14
1027 :     if (coding_type == B_VOP) {
1028 : edgomez 1.38 *fcode_backward = BitstreamGetBits(bs, 3); // fcode_backward
1029 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER, "fcode_backward %i", *fcode_backward);
1030 : chenm001 1.9 }
1031 : edgomez 1.14 if (!dec->scalability) {
1032 :     if ((dec->shape != VIDOBJLAY_SHAPE_RECTANGULAR) &&
1033 :     (coding_type != I_VOP)) {
1034 : edgomez 1.38 BitstreamSkip(bs, 1); // vop_shape_coding_type
1035 : chenm001 1.9 }
1036 : Isibaar 1.1 }
1037 :     return coding_type;
1038 : suxen_drol 1.22
1039 : edgomez 1.14 } else if (start_code == USERDATA_START_CODE) {
1040 : edgomez 1.38 char tmp[256];
1041 :     int i, version, build;
1042 :     char packed;
1043 :    
1044 :     BitstreamSkip(bs, 32); // user_data_start_code
1045 :    
1046 :     tmp[0] = BitstreamShowBits(bs, 8);
1047 :    
1048 :     for(i = 1; i < 256; i++){
1049 :     tmp[i] = (BitstreamShowBits(bs, 16) & 0xFF);
1050 :    
1051 :     if(tmp[i] == 0)
1052 :     break;
1053 :    
1054 :     BitstreamSkip(bs, 8);
1055 :     }
1056 : suxen_drol 1.22
1057 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_STARTCODE, "<user_data>: %s", tmp);
1058 : suxen_drol 1.22
1059 : edgomez 1.38 /* divx detection */
1060 :     i = sscanf(tmp, "DivX%dBuild%d%c", &version, &build, &packed);
1061 :     if (i < 2)
1062 :     i = sscanf(tmp, "DivX%db%d%c", &version, &build, &packed);
1063 :    
1064 :     if (i >= 2)
1065 :     {
1066 :     dec->packed_mode = (i == 3 && packed == 'p');
1067 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER, "divx version=%i, build=%i packed=%i",
1068 : edgomez 1.38 version, build, dec->packed_mode);
1069 :     }
1070 : suxen_drol 1.22
1071 : edgomez 1.38 } else // start_code == ?
1072 : Isibaar 1.1 {
1073 : edgomez 1.14 if (BitstreamShowBits(bs, 24) == 0x000001) {
1074 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_STARTCODE, "<unknown: %x>", BitstreamShowBits(bs, 32));
1075 : Isibaar 1.1 }
1076 :     BitstreamSkip(bs, 8);
1077 :     }
1078 :     }
1079 :     while ((BitstreamPos(bs) >> 3) < bs->length);
1080 :    
1081 : edgomez 1.38 //DPRINTF("*** WARNING: no vop_start_code found");
1082 : edgomez 1.14 return -1; /* ignore it */
1083 : Isibaar 1.1 }
1084 :    
1085 :    
1086 :     /* write custom quant matrix */
1087 :    
1088 : edgomez 1.14 static void
1089 :     bs_put_matrix(Bitstream * bs,
1090 :     const int16_t * matrix)
1091 : Isibaar 1.1 {
1092 :     int i, j;
1093 :     const int last = matrix[scan_tables[0][63]];
1094 :    
1095 : suxen_drol 1.18 for (j = 63; j > 0 && matrix[scan_tables[0][j - 1]] == last; j--);
1096 : Isibaar 1.1
1097 : edgomez 1.14 for (i = 0; i <= j; i++) {
1098 : Isibaar 1.1 BitstreamPutBits(bs, matrix[scan_tables[0][i]], 8);
1099 :     }
1100 :    
1101 : edgomez 1.14 if (j < 63) {
1102 : Isibaar 1.1 BitstreamPutBits(bs, 0, 8);
1103 :     }
1104 :     }
1105 :    
1106 :    
1107 :     /*
1108 :     write vol header
1109 :     */
1110 : edgomez 1.14 void
1111 :     BitstreamWriteVolHeader(Bitstream * const bs,
1112 : suxen_drol 1.39.2.1 const MBParam * pParam)
1113 : Isibaar 1.1 {
1114 : edgomez 1.38 static const unsigned int vo_id = 0;
1115 :     static const unsigned int vol_id = 0;
1116 :     int vol_ver_id=1;
1117 : suxen_drol 1.39.2.5 int vol_type_ind=VIDOBJLAY_TYPE_SIMPLE;
1118 : edgomez 1.38
1119 : edgomez 1.39.2.6 if ( (pParam->vol_flags & XVID_VOL_QUARTERPEL) ||
1120 :     (pParam->vol_flags & XVID_VOL_GMC) ||
1121 :     (pParam->vol_flags & XVID_VOL_REDUCED_ENABLE))
1122 : edgomez 1.38 vol_ver_id = 2;
1123 :    
1124 : edgomez 1.39.2.6 if ((pParam->vol_flags & XVID_VOL_REDUCED_ENABLE)) {
1125 : suxen_drol 1.39.2.5 vol_type_ind = VIDOBJLAY_TYPE_ART_SIMPLE;
1126 :     }
1127 : edgomez 1.38
1128 : edgomez 1.39.2.6 if ((pParam->vol_flags & XVID_VOL_QUARTERPEL) ||
1129 :     (pParam->vol_flags & XVID_VOL_GMC)) {
1130 : suxen_drol 1.39.2.5 vol_type_ind = VIDOBJLAY_TYPE_ASP;
1131 :     }
1132 : edgomez 1.38
1133 :     // visual_object_sequence_start_code
1134 :     // BitstreamPad(bs);
1135 :     /* no padding here, anymore. You have to make sure that you are
1136 :     byte aligned, and that always 1-8 padding bits have been written */
1137 :    
1138 : suxen_drol 1.39.2.7 if (pParam->profile) {
1139 :     BitstreamPutBits(bs, VISOBJSEQ_START_CODE, 32);
1140 :     BitstreamPutBits(bs, pParam->profile, 8);
1141 :     }
1142 : edgomez 1.38
1143 :     // visual_object_start_code
1144 :     BitstreamPad(bs);
1145 :     BitstreamPutBits(bs, VISOBJ_START_CODE, 32);
1146 :     BitstreamPutBits(bs, 0, 1); // is_visual_object_identifier
1147 :     BitstreamPutBits(bs, VISOBJ_TYPE_VIDEO, 4); // visual_object_type
1148 :    
1149 :     // video object_start_code & vo_id
1150 : edgomez 1.14 BitstreamPad(bs);
1151 : edgomez 1.38 BitstreamPutBits(bs, VIDOBJ_START_CODE|(vo_id&0x5), 32);
1152 : Isibaar 1.1
1153 : edgomez 1.38 // video_object_layer_start_code & vol_id
1154 :     BitstreamPad(bs);
1155 :     BitstreamPutBits(bs, VIDOBJLAY_START_CODE|(vol_id&0x4), 32);
1156 : Isibaar 1.1
1157 : edgomez 1.38 BitstreamPutBit(bs, 0); // random_accessible_vol
1158 : suxen_drol 1.39.2.7 BitstreamPutBits(bs, vol_type_ind, 8); // video_object_type_indication
1159 : suxen_drol 1.12
1160 : edgomez 1.38 if (vol_ver_id == 1)
1161 :     {
1162 :     BitstreamPutBit(bs, 0); // is_object_layer_identified (0=not given)
1163 :     }
1164 :     else
1165 :     {
1166 :     BitstreamPutBit(bs, 1); // is_object_layer_identified
1167 :     BitstreamPutBits(bs, vol_ver_id, 4); // vol_ver_id == 2
1168 :     BitstreamPutBits(bs, 4, 3); // vol_ver_priority (1==lowest, 7==highest) ??
1169 :     }
1170 : chl 1.28
1171 : edgomez 1.38 BitstreamPutBits(bs, 1, 4); // aspect_ratio_info (1=1:1)
1172 : edgomez 1.31
1173 : edgomez 1.38 BitstreamPutBit(bs, 1); // vol_control_parameters
1174 :     BitstreamPutBits(bs, 1, 2); // chroma_format 1="4:2:0"
1175 : suxen_drol 1.12
1176 : edgomez 1.38 if (pParam->max_bframes > 0) {
1177 :     BitstreamPutBit(bs, 0); // low_delay
1178 :     } else
1179 :     {
1180 :     BitstreamPutBit(bs, 1); // low_delay
1181 :     }
1182 :     BitstreamPutBit(bs, 0); // vbv_parameters (0=not given)
1183 :    
1184 :     BitstreamPutBits(bs, 0, 2); // video_object_layer_shape (0=rectangular)
1185 : Isibaar 1.1
1186 :     WRITE_MARKER();
1187 : edgomez 1.14
1188 : edgomez 1.38 /* time_inc_resolution; ignored by current decore versions
1189 :     eg. 2fps res=2 inc=1
1190 :     25fps res=25 inc=1
1191 :     29.97fps res=30000 inc=1001
1192 : edgomez 1.14 */
1193 : suxen_drol 1.11 BitstreamPutBits(bs, pParam->fbase, 16);
1194 : edgomez 1.31
1195 : Isibaar 1.1 WRITE_MARKER();
1196 :    
1197 : suxen_drol 1.39.2.3 if (pParam->fincr>0) {
1198 :     BitstreamPutBit(bs, 1); // fixed_vop_rate = 1
1199 :     BitstreamPutBits(bs, pParam->fincr, log2bin(pParam->fbase)); // fixed_vop_time_increment
1200 :     }else{
1201 :     BitstreamPutBit(bs, 0); // fixed_vop_rate = 0
1202 :     }
1203 : Isibaar 1.1
1204 :     WRITE_MARKER();
1205 : edgomez 1.38 BitstreamPutBits(bs, pParam->width, 13); // width
1206 : Isibaar 1.1 WRITE_MARKER();
1207 : edgomez 1.38 BitstreamPutBits(bs, pParam->height, 13); // height
1208 : Isibaar 1.1 WRITE_MARKER();
1209 : edgomez 1.14
1210 : edgomez 1.39.2.6 BitstreamPutBit(bs, pParam->vol_flags & XVID_VOL_INTERLACING); // interlace
1211 : edgomez 1.38 BitstreamPutBit(bs, 1); // obmc_disable (overlapped block motion compensation)
1212 :    
1213 :     if (vol_ver_id != 1)
1214 : edgomez 1.39.2.6 { if ((pParam->vol_flags & XVID_VOL_GMC))
1215 : edgomez 1.38 { BitstreamPutBits(bs, 2, 2); // sprite_enable=='GMC'
1216 :     BitstreamPutBits(bs, 2, 6); // no_of_sprite_warping_points
1217 :     BitstreamPutBits(bs, 3, 2); // sprite_warping_accuracy 0==1/2, 1=1/4, 2=1/8, 3=1/16
1218 :     BitstreamPutBit(bs, 0); // sprite_brightness_change (not supported)
1219 :    
1220 :     /* currently we use no_of_sprite_warping_points==2, sprite_warping_accuracy==3
1221 :     for DivX5 compatability */
1222 :    
1223 :     } else
1224 :     BitstreamPutBits(bs, 0, 2); // sprite_enable==off
1225 :     }
1226 :     else
1227 :     BitstreamPutBit(bs, 0); // sprite_enable==off
1228 :    
1229 :     BitstreamPutBit(bs, 0); // not_8_bit
1230 : Isibaar 1.1
1231 : edgomez 1.38 // quant_type 0=h.263 1=mpeg4(quantizer tables)
1232 : edgomez 1.39.2.6 BitstreamPutBit(bs, pParam->vol_flags & XVID_VOL_MPEGQUANT);
1233 : edgomez 1.14
1234 : edgomez 1.39.2.6 if ((pParam->vol_flags & XVID_VOL_MPEGQUANT)) {
1235 : edgomez 1.38 BitstreamPutBit(bs, get_intra_matrix_status()); // load_intra_quant_mat
1236 : edgomez 1.14 if (get_intra_matrix_status()) {
1237 : Isibaar 1.2 bs_put_matrix(bs, get_intra_matrix());
1238 : Isibaar 1.1 }
1239 :    
1240 : edgomez 1.38 BitstreamPutBit(bs, get_inter_matrix_status()); // load_inter_quant_mat
1241 : edgomez 1.14 if (get_inter_matrix_status()) {
1242 : Isibaar 1.2 bs_put_matrix(bs, get_inter_matrix());
1243 : Isibaar 1.1 }
1244 :    
1245 :     }
1246 :    
1247 : edgomez 1.38 if (vol_ver_id != 1) {
1248 : edgomez 1.39.2.6 if ((pParam->vol_flags & XVID_VOL_QUARTERPEL))
1249 : edgomez 1.38 BitstreamPutBit(bs, 1); // quarterpel
1250 :     else
1251 :     BitstreamPutBit(bs, 0); // no quarterpel
1252 :     }
1253 :    
1254 :     BitstreamPutBit(bs, 1); // complexity_estimation_disable
1255 :     BitstreamPutBit(bs, 1); // resync_marker_disable
1256 :     BitstreamPutBit(bs, 0); // data_partitioned
1257 :    
1258 :     if (vol_ver_id != 1)
1259 :     {
1260 :     BitstreamPutBit(bs, 0); // newpred_enable
1261 :    
1262 : edgomez 1.39.2.6 BitstreamPutBit(bs, (pParam->vol_flags & XVID_VOL_REDUCED_ENABLE)?1:0);
1263 : edgomez 1.38 /* reduced_resolution_vop_enabled */
1264 :     }
1265 :    
1266 :     BitstreamPutBit(bs, 0); // scalability
1267 :    
1268 :     /* fake divx5 id, to ensure compatibility with divx5 decoder */
1269 : suxen_drol 1.39.2.1 #define DIVX5_ID "DivX000b000p"
1270 : edgomez 1.39.2.6 if (pParam->max_bframes > 0 && (pParam->global_flags & XVID_GLOBAL_PACKED)) {
1271 : edgomez 1.38 BitstreamWriteUserData(bs, DIVX5_ID, strlen(DIVX5_ID));
1272 :     }
1273 :    
1274 :     /* xvid id */
1275 :     #define XVID_ID "XviD" XVID_BS_VERSION
1276 :     BitstreamWriteUserData(bs, XVID_ID, strlen(XVID_ID));
1277 : Isibaar 1.1 }
1278 :    
1279 :    
1280 :     /*
1281 :     write vop header
1282 :     */
1283 : edgomez 1.14 void
1284 : edgomez 1.38 BitstreamWriteVopHeader(
1285 :     Bitstream * const bs,
1286 : edgomez 1.14 const MBParam * pParam,
1287 : edgomez 1.38 const FRAMEINFO * const frame,
1288 : suxen_drol 1.17 int vop_coded)
1289 : Isibaar 1.1 {
1290 : suxen_drol 1.8 uint32_t i;
1291 : chl 1.28
1292 : edgomez 1.38 // BitstreamPad(bs);
1293 :     /* no padding here, anymore. You have to make sure that you are
1294 :     byte aligned, and that always 1-8 padding bits have been written */
1295 :    
1296 : edgomez 1.14 BitstreamPutBits(bs, VOP_START_CODE, 32);
1297 :    
1298 :     BitstreamPutBits(bs, frame->coding_type, 2);
1299 : suxen_drol 1.39.2.8 //DPRINTF(XVID_DEBUG_HEADER, "coding_type = %i", frame->coding_type);
1300 : Isibaar 1.1
1301 : chl 1.28 for (i = 0; i < frame->seconds; i++) {
1302 :     BitstreamPutBit(bs, 1);
1303 :     }
1304 :     BitstreamPutBit(bs, 0);
1305 : Isibaar 1.1
1306 :     WRITE_MARKER();
1307 :    
1308 : edgomez 1.38 // time_increment: value=nth_of_sec, nbits = log2(resolution)
1309 :    
1310 : edgomez 1.14 BitstreamPutBits(bs, frame->ticks, log2bin(pParam->fbase));
1311 : edgomez 1.38 /*DPRINTF("[%i:%i] %c", frame->seconds, frame->ticks,
1312 :     frame->coding_type == I_VOP ? 'I' : frame->coding_type ==
1313 :     P_VOP ? 'P' : 'B');*/
1314 : Isibaar 1.1
1315 :     WRITE_MARKER();
1316 :    
1317 : suxen_drol 1.17 if (!vop_coded) {
1318 :     BitstreamPutBits(bs, 0, 1);
1319 :     return;
1320 :     }
1321 :    
1322 : edgomez 1.38 BitstreamPutBits(bs, 1, 1); // vop_coded
1323 : Isibaar 1.1
1324 : edgomez 1.38 if ( (frame->coding_type == P_VOP) || (frame->coding_type == S_VOP) )
1325 : suxen_drol 1.7 BitstreamPutBits(bs, frame->rounding_type, 1);
1326 : Isibaar 1.1
1327 : edgomez 1.39.2.6 if ((frame->vol_flags & XVID_VOL_REDUCED_ENABLE))
1328 :     BitstreamPutBit(bs, (frame->vop_flags & XVID_VOP_REDUCED)?1:0);
1329 : edgomez 1.38
1330 :     BitstreamPutBits(bs, 0, 3); // intra_dc_vlc_threshold
1331 : edgomez 1.14
1332 : edgomez 1.39.2.6 if ((frame->vol_flags & XVID_VOL_INTERLACING)) {
1333 :     BitstreamPutBit(bs, (frame->vop_flags & XVID_VOP_TOPFIELDFIRST));
1334 :     BitstreamPutBit(bs, (frame->vop_flags & XVID_VOP_ALTERNATESCAN));
1335 : edgomez 1.38 }
1336 :    
1337 :     if (frame->coding_type == S_VOP) {
1338 :     if (1) { // no_of_sprite_warping_points>=1 (we use 2!)
1339 :     int k;
1340 :     for (k=0;k<2;k++)
1341 :     {
1342 :     bs_put_spritetrajectory(bs, frame->warp.duv[k].x ); // du[k]
1343 :     WRITE_MARKER();
1344 :    
1345 :     bs_put_spritetrajectory(bs, frame->warp.duv[k].y ); // dv[k]
1346 :     WRITE_MARKER();
1347 :    
1348 : edgomez 1.39.2.6 if ((frame->vol_flags & XVID_VOL_QUARTERPEL))
1349 : edgomez 1.38 {
1350 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER,"sprite_warping_point[%i] xy=(%i,%i) *QPEL*", k, frame->warp.duv[k].x/2, frame->warp.duv[k].y/2);
1351 : edgomez 1.38 }
1352 :     else
1353 :     {
1354 : suxen_drol 1.39.2.8 DPRINTF(XVID_DEBUG_HEADER,"sprite_warping_point[%i] xy=(%i,%i)", k, frame->warp.duv[k].x, frame->warp.duv[k].y);
1355 : edgomez 1.38 }
1356 :     }
1357 :     }
1358 : h 1.4 }
1359 : edgomez 1.38
1360 : h 1.4
1361 : suxen_drol 1.39.2.8 //DPRINTF(XVID_DEBUG_HEADER, "quant = %i", frame->quant);
1362 : edgomez 1.38
1363 :     BitstreamPutBits(bs, frame->quant, 5); // quantizer
1364 : edgomez 1.14
1365 : suxen_drol 1.7 if (frame->coding_type != I_VOP)
1366 : edgomez 1.38 BitstreamPutBits(bs, frame->fcode, 3); // forward_fixed_code
1367 : suxen_drol 1.8
1368 :     if (frame->coding_type == B_VOP)
1369 : edgomez 1.38 BitstreamPutBits(bs, frame->bcode, 3); // backward_fixed_code
1370 :    
1371 :     }
1372 :    
1373 :     void
1374 :     BitstreamWriteUserData(Bitstream * const bs,
1375 :     uint8_t * data,
1376 :     const int length)
1377 :     {
1378 :     int i;
1379 :    
1380 :     BitstreamPad(bs);
1381 :     BitstreamPutBits(bs, USERDATA_START_CODE, 32);
1382 :    
1383 :     for (i = 0; i < length; i++) {
1384 :     BitstreamPutBits(bs, data[i], 8);
1385 :     }
1386 : suxen_drol 1.17
1387 : chl 1.24 }

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